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In response to judicial remand of its Cross-State Air Pollution Rule (CSAPR) Update, EPA published a revised CSAPR Update – the latest of EPA’s interstate transport rules using its CSAPR methodology – at the end of April 2021, slashing ozone-season budgets for emissions of nitrogen oxides (NOx) for a dozen states. By the end of the 60-day period for filing petitions for judicial review on June 29, a single petition for judicial review had been filed in the US Court of Appeals for the DC Circuit. …
Continue Reading EPA’s Revised CSAPR Updated is Issued and a Single Petition for Review is Filed in the DC Circuit

As I have reported previously, the US Court of Appeals for the DC Circuit issued a significant decision in September 2019 on EPA’s implementation of the so-called “Good Neighbor Provision” of the federal Clean Air Act (CAA). That is the CAA’s principal provision addressing what is often termed “interstate transport,” the physical process in which emissions from cars, trucks, factories, power plants, and myriad other sources—and the resulting air pollution—are carried by prevailing winds across state borders. The main purpose of the Good Neighbor Provision (section 110(a)(2)(D)(i)(I) of the CAA) is to prevent “significant contribution” by “upwind” states’ emissions to violations of national ambient air quality standards (NAAQS) in “downwind” states. Although states have the principal responsibility to implement this provision, EPA periodically has invoked its CAA authority to impose requirements to curb interstate transport when it determines upwind states have not adopted adequate controls.
Continue Reading Against a Backdrop of Litigation, EPA Prepares a New Rule to Address Interstate Air Pollution

Over the last decade, regulators have accelerated their focus on vapor intrusion risk at hazardous cleanup sites. This has led to new cleanup standards, policies and guidance to evaluate potential risks, environmental investigation requirements for brownfield redevelopments, and the reopening of previously closed remedial actions. Recently, attention has turned from chronic to acute vapor intrusion risk. Although protection of human health is paramount, this recent focus has been plagued with concerns about the validity of the underlying science and a lack of comprehensive guidance from regulators on how to respond. This article explores the evolution of vapor intrusion regulation, particularly developments addressing acute risk, as well as trends in vapor intrusion- related litigation.
Continue Reading Vapor Intrusion: Acute Exposure Regulatory Developments and Litigation Trends

It is no secret that California has had appliance efficiency standards in place for some time now. And it is no secret that the California Energy Commission (“CEC”) has been responsible for crafting those standards. According to the CEC and the California State Legislature, however, compliance with those standards has been hit-or-miss. In 2011, the Legislature found that “significant quantities of appliances are sold and offered for sale in California that do not meet the state’s energy efficiency standards,” and the CEC itself has stated that nearly half of all regulated appliances are non-compliant, and that certain product categories are entirely non-compliant. The broad range of products covered by the CEC’s efficiency standards may be partly to blame for the lack of compliance, as manufacturers may not even realize their product must comply. For example, the efficiency standards encompass nearly every device with a rechargeable battery and that rechargeable battery system, meaning everything from cell phones to laptops to tablets to golf carts must be tested, certified and listed in the CEC’s database before being offered for sale in California.
Continue Reading California’s Appliance Efficiency Standards and Cost of Non-Compliance